Răspuns:
7 × ( 6 + 8 ) = 7 × 6 + 7 × 8 = 42 + 56 = 98
( 5 + 9 ) × 5 = 5 × 5 + 9 × 5 = 25 + 45 = 70
4 × ( 5 + 7 + 2 ) = 4 × 5 + 4 × 7 + 4 × 2 = 20 + 24 + 8 = 46
